[Python-ideas] Class autoload

[Terry Reedy]

On 3/3/2018 2:33 PM, Terry Reedy wrote:
> On 3/3/2018 12:12 PM, Jamesie Pic wrote:
>>
>> Hello everybody,
>>
>> I thought perhaps we could allow the usage of a "new" keyword to 
>> instanciate an object, ie:
>>
>>     obj = new yourmodule.YourClass()
>>
>> In this case, it would behave the same as from yourmodule import 
>> YourClass; obj = YourClass(), except that it wouldn't need to be 
>> imported. This would also eliminate the need to manage an import list 
>> at the beginning of a script in most case.
> 
> If you really want this (untested):
> 
> def autoload(mod, cls, *args, **kwargs):
>      from mod import cls

The make the above work with variables:

import importlib  # put at top of file
mod = importlib.import_module(mod)
cls = mod.getattr(cls)

>      return cls(*args, **kwargs)
> 
> obj = autoload(yourmodule, YourClass)
> 


-- 
Terry Jan Reedy